DEVOTED TO PROTECTION

When it comes to keeping the car you love safe, there’s a motor oil that offers the world-class performance you demand. AMSOIL shields your automobile with 75% more engine protection against horsepower loss and wear than required by a leading industry standard*, extending the life of vital components like pistons and cams. Discover how we offer next-level protection.

Keep the car you love safe with 75% more engine protection against horsepower loss and wear than required by a leading industry standard*

*As required by a leading industry standard. Based on independent testing of AMSOIL Signature Series 5W-30, in ASTM D7320 as required by API SN specification.

WORLD-CLASS WEAR PROTECTION

See why car enthusiasts, engine builders and racers also depend on AMSOIL lubricants to provide world-class wear protection for their vehicles.

THE PROOF

The American Petroleum Institute sets the minimum standards oil must pass to ensure it will provide adequate protection. One of these standards, the Sequence IIIG Test, subjects oil to 100 hours of use at 302°F- 100° higher than normal operating temperatures- and measures its ability to prevent wear, deposits and more.

Extended Protection for Those Who Demand the Best

AMSOIL synthetic lubricants are hand-crafted for those who live for peak performance and demand the best protection – so you can continue to enjoy your vehicles to the fullest.

AMSOIL Signature Series Synthetic Motor Oil delivers:

75% more engine protection against horsepower loss and wear than required by a leading industry standard*, extending the life of vital components like pistons and cams.

A 92.5 percent better piston deposit score.*

Oil thickening limited to 82 percent below the standard*

*As required by a leading industry standard. Based on independent testing of AMSOIL Signature Series 5W-30, in ASTM D7320 as required by API SN specification.